#include <iostream>
#include <string>

using namespace std;
/**
 * 
 */

class stu
{
public:
    static int i1;
    static int i2;
    static int i3;
public:
    void func1(){

    }
    void func2(){

    }

    void func3(){

    }
};

int stu::i1 = 10;

int main(int argc, char const *argv[])
{
    
    cout << sizeof(stu) << "字节" << endl;

    stu s1;
    stu s2;
    s2.func1();

    s2.i1 = 90;

    cout << s1.i1 << endl;
    return 0;
}
